181

Diversified Electronics

800.727.5646

atcdiversified.com

IND. CONT. EQ.

496Y

Phase Monitor

• Models Available up to

480 VAC

PROTECTS 3-PHASE

EQUIPMENT AGAINST:

• Phase Loss

• Under Voltage

• Phase Unbalance

LOCK SHAFT ADJUSTMENT FOR:

• Phase Unbalanced Percent

• Under Voltage Drop Out

• Automatic Reset

• Delta or Wye Systems

DIMENSIONS

(INCHES)

The SLE Series is designed to protect 3-phase equipment against

PHASE UNBALANCE, PHASE LOSS, and UNDER VOLTAGE.

With normal operating voltage present on all three phases, the internal

relay will energize (PICK-UP). When a phase loss occurs or the voltages

fall outside the preset unbalance or under voltage settings, the internal

relay will de-energize (DROP-OUT). The relay automatically resets when

the line conditions return to normal.

Both Delta and Wye systems may be monitored. In Wye Systems,

connections to neutral are not required.

NOTE: When a phase is lost while the motor is running, a condition

known as regeneration occurs where a voltage is induced into the

open phase nearly equal in magnitude to the normal phase-to-phase

voltage. The SLE series is designed to detect this condition when

properly adjusted.

The SLE Series is UL Listed under UL File Number E55826

OPERATION

WIRING

SPECIFICATIONS

OPERATING

See Table Below

VOLTAGE

TRANSIENT

1000 Volts For 8 mSEC

PROTECTION

RESET

Automatic

PHASE UNBALANCE 2% to 10%, Adjustable

RANGE

INDICATORS LED

Glows When All Conditions Are Normal

RESPONSE TIMES

Operate

60 Milliseconds

MODELS UP TO

Release

0.5 Seconds

300 VAC

RESPONSE TIMES

Operate

1 Second

MODELS OVER

Release

2 Seconds

300 VAC

TEMPERATURE

Operate

32° to +131°F (0° to +55°C)

RATING

Storage

-49° to 185°F (-45° to +85°C)

U.S. PATENT NO.

4,331,995

WEIGHT

12.5 to 13 oz.

MODEL

OPERATING

UNDER VOLTAGE

POWER

HYSTERESIS

OUTPUT RATING

NUMBER

VOLTAGE

DROPOUT RANGE

REQUIRED

SLE-120-ALE

120 VAC

95-115 Adj.

3 VA Max.

5.0 VAC

DPDT, 5 Amps, Resistive; 345 VA,

SLE-230-ALE

208/240 VAC

185-230 Adj.

Inductive @ 240 VAC

SLE-380-ALE

380 VAC

315-390 Adj.

7 VA Max.

10 VAC

DPDT, 3 Amps, Resistive; 360 VA,

SLE-440-ALE

440/480 VAC

370-460 Adj.

Inductive @ 600 VAC

All voltage referenced are phase-to-phase.